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3 years ago

SOMEONE HELP WHAT IS THE ANSWER TO THESE QUESTIONS PLEASE HELP

Mathematics

1 answer:

romanna [79]3 years ago

7 0

10.
Answer: 42° and 138°
Steps: First find value of x by adding both equations and setting them equal to 180°:
3x + 12x - 30 = 180
15x - 30 = 180
15x = 210
x = 14

Next, put value of x into equations to find the angle:
3x
3(14)
42°

12x - 30
12(14) - 30
168 - 30
138°

11. Answer: 28°
Steps: Complementary angles add up to 90°, so subtract 62° from 90° to find its complementary angle.
90 - 62 = 28

12. Answer: Corresponding angles are congruent.

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lesya692 [45]

Answer:

The x-intercepts are

(x1,y1)=(4,0)

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Step-by-step explanation:

we know that

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we have

the vertex is the point (5,-4)

substitute

$(y+4)=a(x-5)^{2}$

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substitute and solve for a

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The equation of the vertical parabola is equal to

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Find the x-intercepts

Remember that

The x-intercepts are the values of x when the value of y is equal to zero

For y=0

$4=4(x-5)^{2}$

Simplify

$1=(x-5)^{2}$

Rewrite

$(x-5)^{2}=1$

square root both sides

$(x-5)=(+/-)1$

$x=(+/-)1+5$

$x=(+)1+5=6$

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therefore

The x-intercepts are

(x1,y1)=(4,0)

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